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/*
* This file is part of OneConfig.
* OneConfig - Next Generation Config Library for Minecraft: Java Edition
* Copyright (C) 2021, 2022 Polyfrost.
* <https://polyfrost.cc> <https://github.com/Polyfrost/>
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* OneConfig is licensed under the terms of version 3 of the GNU Lesser
* General Public License as published by the Free Software Foundation, AND
* under the Additional Terms Applicable to OneConfig, as published by Polyfrost,
* either version 1.0 of the Additional Terms, or (at your option) any later
* version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License. If not, see <https://www.gnu.org/licenses/>. You should
* have also received a copy of the Additional Terms Applicable
* to OneConfig, as published by Polyfrost. If not, see
* <https://polyfrost.cc/legal/oneconfig/additional-terms>
*/
package cc.polyfrost.oneconfig.config.migration;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class CfgMigrator implements Migrator {
final String filePath;
final boolean fileExists;
HashMap<String, HashMap<String, Object>> values;
final Pattern stringOrFloatPattern = Pattern.compile("S:(?<name>\\S+)=(?<value>\\S+)");
final Pattern intPattern = Pattern.compile("I:(?<name>\\S+)=(?<value>\\S+)");
final Pattern doublePattern = Pattern.compile("D:(?<name>\\S+)=(?<value>\\S+)");
final Pattern booleanPattern = Pattern.compile("B:(?<name>\\S+)=(?<value>\\S+)");
final Pattern listPattern = Pattern.compile("S:(?<name>\\S+)\\s<");
final Pattern categoryPattern = Pattern.compile("(?<name>\\S+)\\s\\Q{");
public CfgMigrator(String filePath) {
this.filePath = filePath;
this.fileExists = new File(filePath).exists();
}
/**
* Get the value from its name, category, and subcategory. The target field is also supplied, which can be used to check for {@link VigilanceName}.
* The returned Object is intended to be a "Duck" object, and should be cast to the correct type. The Migrator should never return ClassCastExceptions.
* <br><b>NOTE: .cfg files DO NOT support subcategories! The implementation of this is:</b> <br>
* <pre>{@code // if a category and a subcategory is supplied, only the category is used. else:
* if(category == null && subcategory != null) category = subcategory;}</pre>
*
* @param subcategory The subcategory of the option (not supported!)
*/
@Nullable
@Override
public Object getValue(Field field, @NotNull String name, @Nullable String category, @Nullable String subcategory) {
if (!fileExists) return null;
if (values == null) generateValues();
if (field.isAnnotationPresent(CfgName.class)) {
CfgName annotation = field.getAnnotation(CfgName.class);
name = annotation.name();
category = annotation.category();
}
name = parse(name);
if (category == null) {
if (subcategory != null) {
category = parse(subcategory);
}
} else category = parse(category);
return values.getOrDefault(category, new HashMap<>()).getOrDefault(name, null);
}
protected void generateValues() {
if (values == null) values = new HashMap<>();
try (BufferedReader reader = new BufferedReader(new FileReader(filePath))) {
String currentCategory = null;
String line;
while ((line = reader.readLine()) != null) {
Matcher categoryMatcher = categoryPattern.matcher(line);
if (categoryMatcher.find()) {
currentCategory = categoryMatcher.group("name");
if (!values.containsKey(currentCategory)) values.put(currentCategory, new HashMap<>());
}
if (currentCategory == null) continue;
if (line.contains("\"")) {
line = line.replaceAll("\"", "").replaceAll(" ", "");
}
Matcher booleanMatcher = booleanPattern.matcher(line);
if (booleanMatcher.find()) {
values.get(currentCategory).put(booleanMatcher.group("name"), Boolean.parseBoolean(booleanMatcher.group("value")));
continue;
}
Matcher intMatcher = intPattern.matcher(line);
if (intMatcher.find()) {
values.get(currentCategory).put(intMatcher.group("name"), Integer.parseInt(intMatcher.group("value")));
continue;
}
Matcher doubleMatcher = doublePattern.matcher(line);
if (doubleMatcher.find()) {
values.get(currentCategory).put(doubleMatcher.group("name"), Double.parseDouble(doubleMatcher.group("value")));
continue;
}
Matcher stringOrFloatMatcher = stringOrFloatPattern.matcher(line.trim());
if (stringOrFloatMatcher.matches()) {
if (line.contains(".")) {
try {
values.get(currentCategory).put(stringOrFloatMatcher.group("name"), Float.parseFloat(stringOrFloatMatcher.group("value")));
} catch (Exception ignored) {
values.get(currentCategory).put(stringOrFloatMatcher.group("name"), stringOrFloatMatcher.group("value"));
}
}
values.get(currentCategory).put(stringOrFloatMatcher.group("name"), stringOrFloatMatcher.group("value"));
continue;
}
Matcher listMatcher = listPattern.matcher(line.trim());
if (listMatcher.matches()) {
String name = listMatcher.group("name");
ArrayList<String> list = new ArrayList<>();
while ((line = reader.readLine()) != null && !line.contains(">")) {
list.add(line.trim());
}
String[] array = new String[list.size()];
// type casting doesn't work, so you have to do this
list.toArray(array);
values.get(currentCategory).put(name, array);
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
@NotNull
protected String parse(@NotNull String value) {
if (value.contains("\"")) {
return value.replaceAll("\"", "").replaceAll(" ", "");
} else return value;
}
}
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